23 Transmission designations

WARNING: This page is about a different car, the 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Breakdown of BMW designation:

BREAKDOWN OF BMW DESIGNATION

A5S 300J (former designation)
A	Transmission type	S = Manual gearbox A = Automatic transmission
5	Number of forward gears
S	Type of top gear	D = Direct gear S = Overdrive gear
300	Max. input torque (Nm)
J	Code letter of transmission manufacturer	G = Getrag J = Jatco R = GMPT (General Motors Powertrain) Z = ZF (Zahnradfabrik Friedrichshafen)
SMG	Notes	SMG = Sequential M gearbox/transmission

SEQUENTIAL M GEARBOX/TRANSMISSION DESIGNATION

GS6-37BZ (new designation according to BMW Group Standard GS 90007)
G	Transmission
S	Transmission type	S = Manual gearbox A = Automatic transmission
6	Number of forward gears
-		- = Standard with manual gearshift HP = Hydraulic planetary gear train DKG= Twin-clutch transmission/gearbox
37	Transmission type	26 = D-transmission 31 = C-transmission 39 = F-transmission 37 = H-transmission 53 = G-transmission 17 = I-transmission 47= J transmission SMG -7-speed 45 = K transmission 36= Transmission DKG
B	Gear set	B = Petrol gear ratio D = Diesel gear ratio S= Sport gear ratio
Z	Code letter of transmission manufacturer	G = Getrag Z = ZF (Zahnradfabrik Friedrichshafen)

Manual gearbox

MANUAL GEARBOX DESIGNATION

BMW designation	Manufacturer	Manufacturer designation	Remarks

S5D 200G	Getrag	B transmission (220/5)
S5D 200G	Getrag	B transmission (221/5)	for M41 engine only
S5D 250G	Getrag	B transmission (220/5)	Reinforced design

S5D 260Z	ZF	C-transmission (S5-31 D)	for M51 engine only
S5D 280Z	ZF	C-transmission (S5-31)
S5D 310Z	ZF	C-transmission (S5-31)	up to 9.95
S5D 320Z	ZF	C-transmission (S5-31)	from 9.95 (reinforced design)
GS5S31BZ (SMG)	ZF	C transmission	SMG
GS5-39DZ	ZF	F transmission
S6S 420G	Getrag	D-transmission (226/6)
S6S 420G (SMG)	Getrag	D transmission	SMG
S6S 560G	Getrag	E-transmission (286/6)


GS6-37BZ	ZF	H-transmission
GS6S37BZ (SMG)	ZF	H-transmission
GS6-37DZ	ZF	H-transmission
GS6-37BG	Getrag	H-transmission
GS6-53BZ	ZF	G-transmission
GS6-53DZ	ZF	G-transmission
GS6-17BG	Getrag	I-transmission
GS6-17DG	Getrag	I-transmission
GS7S47BG (SMG)	Getrag	J-transmission (247)	SMG -7-speed

GS7D36SG	Getrag	DKG (436)	DKG -7-speed

GS6- 45BZ	ZF	K transmission
GS6- 45DZ	ZF	K transmission

Automatic transmission

AUTOMATIC TRANSMISSION DESIGNATION

BMW designation	Manufacturer	Manufacturer designation	Remarks

A4S 200R	GMPT	GM4

A4S 270R	GMPT	THM-R1w	Transmission wide-stepped
A4S 310R	GMPT	THM-R1

A5S 300J	Jatco	Jatco

A5S 310Z	ZF	5HP-18
A5S 325Z	ZF	5HP-19
A5S 440Z	ZF	5HP-24
A5S 560Z	ZF	5HP-30

A5S 360R/390R	GM	GM5

GA6HP19Z	ZF	6HP19
GA6HP26Z	ZF	6HP26
GA6HP32Z	ZF	6HP32

GA6L45R	GM	GM6

GA8HP45Z	ZF	8HP45
GA8HP70Z	ZF	8HP70
GA8HP90Z	ZF	8HP90

GA7AHSCD	Daimler	AHS-C	Hybrid